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Dependency display

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Task views now include the list of dependencies and reverse
dependencies. In addition, it is impossible to mark a task as completed
if it has unsatisfied dependencies, and it is impossible to re-activate
a task that has completed reverse dependencies.
This commit is contained in:
Emmanuel BENOîT 2012-02-05 19:59:51 +01:00
parent 9677ad4dd3
commit fd50fda73a
6 changed files with 121 additions and 11 deletions
includes/t-data
dao_tasks.inc.php

45
includes/t-data/dao_tasks.inc.php
View file

@ -98,6 +98,27 @@ class DAO_Tasks
. 'INNER JOIN users u USING (user_id) '
. 'WHERE n.task_id = $1 '
. 'ORDER BY n.note_added DESC' )->execute( $id );
$task->dependencies = $this->query(
'SELECT t.task_id AS id , t.task_title AS title , t.item_id AS item , '
. 'i.item_name AS item_name , '
. '( ct.completed_task_time IS NOT NULL ) AS completed '
. 'FROM task_dependencies td '
. 'INNER JOIN tasks t ON t.task_id = td.task_id_depends '
. 'INNER JOIN items i USING ( item_id ) '
. 'LEFT OUTER JOIN completed_tasks ct ON ct.task_id = t.task_id '
. 'WHERE td.task_id = $1 '
. 'ORDER BY i.item_name , t.task_priority , t.task_title' )->execute( $id );
$task->reverseDependencies = $this->query(
'SELECT t.task_id AS id , t.task_title AS title , t.item_id AS item , '
. 'i.item_name AS item_name , '
. '( ct.completed_task_time IS NOT NULL ) AS completed '
. 'FROM task_dependencies td '
. 'INNER JOIN tasks t USING( task_id ) '
. 'INNER JOIN items i USING ( item_id ) '
. 'LEFT OUTER JOIN completed_tasks ct USING ( task_id ) '
. 'WHERE td.task_id_depends = $1 '
. 'ORDER BY i.item_name , t.task_priority , t.task_title' )->execute( $id );
return $task;
}
@ -113,6 +134,30 @@ class DAO_Tasks
}
public function canFinish( $task )
{
assert( $task->completed_at == null );
foreach ( $task->dependencies as $dependency ) {
if ( $dependency->completed != 't' ) {
return false;
}
}
return true;
}
public function canRestart( $task )
{
assert( $task->completed_at != null );
foreach ( $task->reverseDependencies as $dependency ) {
if ( $dependency->completed == 't' ) {
return false;
}
}
return true;
}
public function delete( $task )
{
$this->query( 'DELETE FROM tasks WHERE task_id = $1' )->execute( $task );